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authorJack Lloyd <jack@randombit.net>2017-08-04 15:22:33 -0400
committerJack Lloyd <jack@randombit.net>2017-08-04 15:22:33 -0400
commit87fcd69b587ccd60c5f248b40003cf9a0a558a53 (patch)
treec558cab7be5e591a36d74c3f8948c018a1c89bb7 /src/lib/pubkey/sm2/sm2_enc.h
parent58b1f7cc90b3e5c8a4bbff7adf2c001db0ef4d21 (diff)
Add SM2 encryption scheme
This is a contribution from Ribose Inc (@riboseinc)
Diffstat (limited to 'src/lib/pubkey/sm2/sm2_enc.h')
-rw-r--r--src/lib/pubkey/sm2/sm2_enc.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/src/lib/pubkey/sm2/sm2_enc.h b/src/lib/pubkey/sm2/sm2_enc.h
new file mode 100644
index 000000000..f8da6a27f
--- /dev/null
+++ b/src/lib/pubkey/sm2/sm2_enc.h
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+/*
+* SM2 Encryption
+* (C) 2017 Ribose Inc
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SM2_ENC_KEY_H__
+#define BOTAN_SM2_ENC_KEY_H__
+
+#include <botan/ecc_key.h>
+
+namespace Botan {
+
+/**
+* This class represents a public key used for SM2 encryption
+*/
+class BOTAN_DLL SM2_Encryption_PublicKey : public virtual EC_PublicKey
+ {
+ public:
+
+ /**
+ * Create a public key from a given public point.
+ * @param dom_par the domain parameters associated with this key
+ * @param public_point the public point defining this key
+ */
+ SM2_Encryption_PublicKey(const EC_Group& dom_par,
+ const PointGFp& public_point) :
+ EC_PublicKey(dom_par, public_point) {}
+
+ /**
+ * Load a public key.
+ * @param alg_id the X.509 algorithm identifier
+ * @param key_bits DER encoded public key bits
+ */
+ SM2_Encryption_PublicKey(const AlgorithmIdentifier& alg_id,
+ const std::vector<uint8_t>& key_bits) :
+ EC_PublicKey(alg_id, key_bits) {}
+
+ /**
+ * Get this keys algorithm name.
+ * @result this keys algorithm name
+ */
+ std::string algo_name() const override { return "SM2_Enc"; }
+
+ std::unique_ptr<PK_Ops::Encryption>
+ create_encryption_op(RandomNumberGenerator& rng,
+ const std::string& params,
+ const std::string& provider) const override;
+ protected:
+ SM2_Encryption_PublicKey() = default;
+ };
+
+/**
+* This class represents a private key used for SM2 encryption
+*/
+class BOTAN_DLL SM2_Encryption_PrivateKey : public SM2_Encryption_PublicKey,
+ public EC_PrivateKey
+ {
+ public:
+
+ /**
+ * Load a private key
+ * @param alg_id the X.509 algorithm identifier
+ * @param key_bits ECPrivateKey bits
+ */
+ SM2_Encryption_PrivateKey(const AlgorithmIdentifier& alg_id,
+ const secure_vector<uint8_t>& key_bits);
+
+ /**
+ * Create a private key.
+ * @param rng a random number generator
+ * @param domain parameters to used for this key
+ * @param x the private key (if zero, generate a new random key)
+ */
+ SM2_Encryption_PrivateKey(RandomNumberGenerator& rng,
+ const EC_Group& domain,
+ const BigInt& x = 0);
+
+ bool check_key(RandomNumberGenerator& rng, bool) const override;
+
+ std::unique_ptr<PK_Ops::Decryption>
+ create_decryption_op(RandomNumberGenerator& rng,
+ const std::string& params,
+ const std::string& provider) const override;
+ };
+
+}
+
+#endif